CN103469839B - A kind of voluntarily raft formula channel cleanout device - Google Patents
A kind of voluntarily raft formula channel cleanout device Download PDFInfo
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- CN103469839B CN103469839B CN201310416511.7A CN201310416511A CN103469839B CN 103469839 B CN103469839 B CN 103469839B CN 201310416511 A CN201310416511 A CN 201310416511A CN 103469839 B CN103469839 B CN 103469839B
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Abstract
The present invention proposes a kind of voluntarily raft formula channel cleanout device.It is a kind of mobile continuous desilting device using river water power generator as dynamical system, using raft unit plate or combination body as apparatus of transport, using water body flow power as self-power.The present invention directly excavates silt using the spiral silt remover with drill bit in the sand bed of river bed, with the raft unit plate equipped with ribbon conveyer mutually bound, the mobile floating-bridge type transport channel of composition, silt is directly sent to embankment by relay-type, solves the bottleneck problems such as low, the transport difficulty of traditional machines for mud clearage efficiency.Floating engine with Waterwheel-type water motor is combined and is used double-walled floating cylinder by water blocking skirt so that buoyancy and generating power by water current ability are all improved.The river water power generator built in the construction process or power station can both meet the power demand of voluntarily raft formula channel cleanout device, also can access power grid, obtained and administered the dual economy benefit that a river leaves a electric power legacy.
Description
Technical field
The present invention relates to voluntarily raft formula channel cleanout engineering device technique fields.
Background technology
With increasing for global anomalous weather, it has no longer been small probability event that river basin flood, which occurs, for rivers.Rivers
Middle and lower reaches river is due to the long-term stasis of Sediment deposits, and water channel, which shoals, to narrow, and Rong Hong is less able, in addition original flood bank
Dam too short is narrow, and is mostly ridge shape dam body more than continuous dozens of kilometres, once meeting with superpower flood, flood occurs almost
It is inevitable.Therefore, make an overall screening deepen the river course, build highland type it is round-the-clock flood control embankment have become most pressing water
Sharp engineering duty.Traditional water conservancy engineering technology is high with equipment energy consumption, efficiency is low, construction speed is slow, it is unbearable this.The present inventor
《A kind of hydrodynamic machine and its application method and purposes》(application number：201010000419.9) one kind is proposed in patent application
Risen the silt-cleaning vessel for river way for Accrete clearing device such as machine with Waterwheel-type water motor etc. for power plant, with mud.It is also proposed that
The technical solution on ground is made in beach and embankment with the silt that river clears out.Since this silt-cleaning vessel for river way is using single boat-carrying
Hydrodynamic machine, dynamic power machine are connect with Accrete clearing device direct-drive, and output is again mud mixture, this allows for the covering device
There are power it is inadequate, be not convenient to use universal machine and the not high enough technological deficiency of desilting efficiency data, so as to limit the device
Use scope.The present invention seeks to produce a kind of new equipment, enables to make full use of the spontaneous resource in river, efficiently remove
Channel deposits economically and quickly builds all-weather flood control dam.
Invention content
The technical problems to be solved by the invention have three：First, how for the desilting platform of mobile working, to provide river spontaneous
Renewable energy driving source；Second is that how quickly and efficiently to remove channel deposits；It is third, how continuously that silt is direct
It is transported on embankment.
The technical solution adopted in the present invention is：
A kind of voluntarily raft formula channel cleanout device of manufacture, includes the use of hydrodynamic machine, raft unit plate, floating engine and magnetic and moves
Machine technology.Voluntarily raft formula channel cleanout device be one kind using river water power generator as dynamical system, with raft unit plate or its group
Zoarium is apparatus of transport, the mobile continuous desilting work system using water body flow power as self-power, including being equipped with water motor
Tool, the generation platform of floating engine and magnetic motivation power generator or power station, the dredging equipped with digging type and/or the formula machinery that rises are put down
Platform and the shipping platform equipped with ribbon conveyer or other continuative transports machinery.Raft unit plate according to raft formula man-made island construction
Method manufactures, and is first assembled into raft unit plate in desilting site, then by raft unit plate group by the raft unit being factory produced
Dress up each functional workbench.Desilting platform is arranged in channel cleanout point.After shipping platform is arranged in the side of desilting platform
The wing forms mobile floating-bridge type transport channel.The continuous conveyor of shipping platform the last raft unit plate installation high dip angle, is unloaded
Material mouth is opened in above embankment.Generation platform can be moved together with dredging and shipping platform, could be secured to one place, be built up both
Power generator or power station that dredging requirement of engineering also can access power grid can be met.
Desilting platform includes digging type desilting platform and the formula desilting platform that rises.The formula desilting platform of rising is with a raft list
First plate substitutes silt-cleaning vessel for river way hull, replaces spiral water motor, propeller type water motor and waterwheel with power-driven system
The mechanical dynamic system of formula water motor composition.Digging type desilting platform installs spiral silt remover on the head of a raft unit plate
Or modified bucket wheel excavator or bucket wheel reclaimer are machines for mud clearage, add or are not added with ribbon conveyer.Modified bucket wheel excavator
Or bucket wheel reclaimer cancels running gear, directly using raft unit plate top layer as chassis.Desilting platform installs liftable and steering
Motor-driven paddle wheel, husky centered rudder and self-propelled plough mud machine, tail portion and the head of hithermost shipping platform raft unit plate make turntable
Formula hinge connection.The installation center control room on platform.It is equipped in central control room to a full set of voluntarily raft formula channel cleanout device
Carry out the electronic control system of unified manipulation.
Spiral silt remover is installed on an elevating control frame, by a drill bit with internal thread blade and a bending spiral shell
Rotation transporter is formed by inscribed fastener for connection.Steel pipe is supported by stent, and steel duct is by spoke and hub support.It is set in wheel hub
There is spiral conveyer end bearing.Outer wall of steel pipe rear end is fixedly connected with the tube wall or hopper of spiral conveyer, front end and drill bit
It is connected in bearing.Drill bit outer wall set gear transmission device and driving device.Connection, transmission and the driving device of drill bit are all set
In casing or other sealed water-tight spaces.Discharge port is docked by discharging diversion trench with the transmission device of Transport Machinery.This
The spiral silt remover of sample can abreast set multiple.
Shipping platform is made of more than one raft unit plate equipped with ribbon conveyer or other continuative transports machinery.Respectively
It is connected between raft unit plate along side in binding formula.Near the head of the raft unit plate of desilting platform and desilting platform
Tail portion is directly connected to.Each raft unit plate is staggered 1/5-1/2 body position backward successively from desilting platform to embankment, and whole is in wild goose
Line arranges.The loading attachment phase of the discharge mechanism of previous raft unit plate transporter and the latter raft unit plate transporter
Docking.Conveyer belt after discharging replaces clearing apparatus by cascade sprinkling.Raft unit plate installation closest to embankment tilts transport
The strong belt of ability or helical conveyor, and its discharge port is made to be located at the top of embankment.Each raft unit plate is independently pacified
Fill propeller or paddle wheel, rudder and self-propelled plough mud machine and electronic control system.All mechanical devices are all pressed on raft unit plate
The instruction works of electronic control system.
Generation platform mainly installs generating power by water current and buoyancy generating set, and magnetic power generator is only used as complementarity and complementary dress
Put use.Generating power by water current and buoyancy generating can be used independently, can also be combined into river water hybrid power generation device.Solely
Vertical stream generating device sets up Waterwheel-type water motor or the propeller of suspension module formula assembling using raft unit plate as supporting body
Formula hydrodynamic(al) unit generates electricity.One liftable raft is set at the position placed in the middle of raft unit plate, mould is installed on raft
The propeller type hydrodynamic(al) unit of block formula assembling, raft and hydrodynamic(al) unit are sunk in the flow of projected depth, just form suspension type
Stream generating device.Waterwheel-type water motor and floating engine are positioned apart from raft unit plate position placed in the middle, the two is made to share one
A center driving main shaft rotating Vortex, and water blocking skirt is set around floating engine, lower edge and the floating engine lower sprocket of water blocking skirt
Horizontal diameter flush, the floating cylinder of floating engine is round or non-circular double-walled cylinder, just forms the power generation of river water hybrid power
Device.When generating power by water current and river water hybrid power generation device are used as mobile generating device, alternative one or more transports
The raft unit plate of platform is formed with the raft unit plate for generating electricity and transporting dual function.Stationary power generation device or power generation
It stands, sets independent buoyancy generating set on bank or on the bank, generating power by water current or river water hybrid power generation device are set in korneforos.Gu
The selection of fixed pattern buoyancy generating set builds cistern close to the embankment of main stem, reserve-water-level and riverbed mean annual water (level) in pond
It is equal.Natural water inlet is repaiied in basin bottom, is connected by conduit pipe with riverbed bottom.Artificial water inlet is opened in pond water storage
Position top.Discharge outlet is connected to channel or low-lying place outside dike directly or by pipeline.The power station of freezed in winter will build greenhouse protection
Cistern.Electric line that stationary power generation device or power station are laid by bank or laid along water (flow) direction, by small
The cable of type raft support carries out power transmission.
Round or non-circular double-walled cylinder has inside and outside two cylinder walls that bottom is connected.Inner wall passes through oil sealing and gravity piston
Fitting.The top surface of outer wall and gravity piston is encircled into gas chamber, and has stent support.The cross section of gravity piston and cylinder inner wall can
To be round, semicircle, semilune or other are suitable for the geometric form of oil sealing.
The beneficial effects of the present invention are：
1st, hull is replaced to be not only convenient for Assembling, cheap with raft formula unit plate, and draft is small, is convenient for
Compared with working under shallow water conditions；2nd, the use of float power generation, generating power by water current and magnetic power generator is hybrid power, power generator is independent
It is arranged to a function platform, all mechanical devices are all driven by motor, and This prevents when hydrodynamic condition is deteriorated
The problem of being short of power also allows for selecting various universal machine devices, is convenient for automatic electronic control；3rd, using digging type
Machines for mud clearage particularly spiral silt remover carries out underwater desilting, and direct digging exports Sediment deposits, with exporting mud mixture
It compares, desilting efficiency data significantly improves；4th, it is arranged, can be given in desilting platform side rear geese flying in a line-brothers formula with mobile delivery unit plate
Desilting platform provides motive force, and the silt continuative transport of desilting platform is come out and is directly sent to embankment, and it is clear to solve restriction
The transportation bottleneck problem of silt efficiency so that efficiently quick dredging is possibly realized；5th, using liftable paddle wheel as support and row
It walks tool, make arrestment mechanism by the use of husky centered rudder as steering mechanism, with self-propelled plough mud machine, and with the electronic control of central control room
Systematic unity controls all mechanical devices of each unit plate, and huge channel cleanout device can be made to coordinate controllable shape
It works under state；6th, river water hybrid power generation device uses water blocking skirt to provide the hydrostatic work do not interfered by flow for buoyancy generating
While condition, also artificial Condition of Supercritical Flow is provided for adjacent Waterwheel-type stream generating device.The lower edge of water blocking skirt is with floating
The horizontal diameter of motivation lower sprocket flushes, and makes through the tail portion of the floating cylinder of half of circumference under lower sprocket by water impact,
Buoyancy generating is made to be superimposed generating power by water current effect again, enhances buoyancy generating ability；7th, stationary power generation device or power station
It establishes, while dredging task is completed, also completes the construction task in river water power station, administer a river and leave one
Serial electric power legacy, obtains dual substantial economics；8 double-walled cylinders are compared with the space bigger of monoshell cylinder gas chamber, cylinder
Length can shorten, and can place more floating cylinders, while also increase the horizontal stroke of cylinder on equally long driving chain
Sectional area, can be by the water flow impact pressure of bigger, so as to significantly improve the ability of buoyancy generating in the lower part of water blocking skirt.
Description of the drawings
Fig. 1, desilting platform schematic diagram.1 --- ribbon conveyer, 2 --- driving device 3 --- central control rooms, 4 ---
Raft unit plate, 5 --- drill bit, 6 --- bearing, 7 --- spiral conveyer, 8 --- paddle wheel, 9 --- husky centered rudder, 10 --- from
Line plough mud machine, 11 --- river bed sand bed.
Fig. 2, river water hybrid power generation device.12 --- Waterwheel-type water motor, 13 --- raft unit plate, 14 --- altogether
With center driving main shaft, 15 --- floating engine, 16 --- water blocking skirt, 17 --- lower sprocket.
Fig. 3, double-walled floating cylinder.18 --- gas chamber, 19 --- stent, 20 --- gravity piston, 21 --- inner wall,
22 --- outer wall.
Specific embodiment
Embodiment one, the dredging work in Lower Reaches of The Yellow River section river
1st, River Hydrology geomorphic feature.River is in east-west, there is riverbed, channel bar, point bar and alluvial flat, wide 10km, south
There are Dike Along Lower Yellow River, dykes and dams high 3m, wide 9m in northern two sides.Embankment is higher by the outer ground 8m of dike.Main stem scour to the south, maximum water depth
6m, northwards water gradually become shallower as, the outer exposure beaches of 1km, the wide 400m of dry season main stem, there is distributary channel in beach the north.
2nd, engineering duty.Main stem is deepened south from 600m dredgings, the new of beach 6m occurs in each new height of building in north and south two sides
Embankment is production living land on embankment.
3rd, engineering construction.Dry season takes ground construction method to carry out excavation cleaning to the beach of exposure.In north and south two sides
Respectively build a fixed river water power station.The silt in main stem is risen to branch river with the formula desilting platform that rises before construction
At road bifurcation mouth, branch channel is blocked.Voluntarily raft unit plate 4 is assembled at the construction field (site), and each wide 15m of unit plate is long
25m.Dredging unit plate 4 installs the spiral silt remover 7 of 6 bore 80cm side by side, divides left right model, and levorotation is mounted on plate front end
Right side, right type is then mounted on left side, with three ribbon conveyers 1.Each delivery unit plate is also equipped with three ribbon conveyers
1.Dredging is carried out from south and north flanks to centre, and north side uses levorotation silt remover, and southern side uses right type silt remover, and fair current is clear eastwards
It becomes silted up.Southern side at away from southern bank 50m dredging, three assembled delivery unit plates are staggered 1/ backward successively from left to right
3 body positions are mutually bound from side.The leftmost side is head raft, is made among head of link and desilting platform tail portion rack
Hinge connection.The rightmost side is tail raft, installs the spiral conveyer 7 at three 70 ° of inclination angles, discharge port is directly against dumping plough.It will
The winding roll for the cable drawn from the power transmission and transforming equipment of power station is arranged on tail raft, is put down to three delivery unit plates and dredging
Each motor machine power transmission of platform.Spiral silt remover drill bit 5 is dropped to below 11 surface 10cm of river bed sand bed by crane
In silt layer, silt is shifted onto the end of spiral conveyer 7, spiral fortune when creeping into forward by drill bit by disposed thread shape blade
Defeated machine 7 is unloaded to silt on the ribbon conveyer 1 of desilting platform, is then transmitted to again on the transporter of shipping platform head rafts,
Until silt is directly arranged on embankment by dumping plough by the screw machine of tail raft and on the bank, just complete from excavation to transport
The streamlined continuous work program of casting is arrived again.When desilting platform needs adjustment direction, Shamian Island paddle wheel 8 and husky centered rudder 9 are used
System, while the first raft of shipping platform, tail raft and its raft unit plate that closes on is commanded to do otherness drive by central control room 3
Dynamic or braking, corresponding actions are made together with rudder arrangement.When hydro-flow thrust is excessive, falls self-propelled plough mud machine 10 and braked.
When needing to migrate desilting platform into river, transport raft unit plate need to be only added between the first raft of shipping platform and tail raft
.Dredging and shipping platform have slurry system, can countercurrently fall back, and restart next dredging process.North side is also square like this
Method is from northern bank to intermediate dredging, and when the Accrete clearing device of both sides meets in river, the dredging work of entire section, which is accused, to be completed.
Claims (6)
1. a kind of voluntarily raft formula channel cleanout device, includes the use of hydrodynamic machine, raft unit plate, floating engine and magnetic motivation skill
Art, it is characterised in that the voluntarily raft formula channel cleanout device be one kind using river water power generator as dynamical system, with raft list
First plate or combination body is apparatus of transport, the mobile continuous desilting work system using water body flow power as self-power, packet
It includes equipped with hydrodynamic machine, the generation platform of floating engine and magnetic motivation power generator or power station, equipped with digging type and/or the formula that rises
The desilting platform of machinery and the shipping platform equipped with ribbon conveyer or other continuative transports machinery, raft unit plate is according to raft formula
The method of construction manufacture of man-made island, is first assembled into raft unit plate (4) by the raft unit being factory produced in desilting site, then
Each functional workbench is assembled by raft unit plate, desilting platform is arranged in channel cleanout point, and shipping platform is arranged in
The side rear wing of desilting platform forms mobile floating-bridge type transport channel, shipping platform the last raft unit plate installation high dip angle
Continuous conveyor, discharge port is opened in above embankment, and generation platform can be moved together with dredging and shipping platform, be could be secured to
One place builds up power generator or the power station that can both meet dredging requirement of engineering or can access power grid.
2. voluntarily raft formula channel cleanout device according to claim 1, it is characterised in that the desilting platform includes digging
Pick formula desilting platform and the formula desilting platform that rises, the formula desilting platform of rising are to substitute silt-cleaning vessel for river way ship with a raft unit plate
Body replaces the machine power of spiral water motor, propeller type water motor and Waterwheel-type water motor composition with power-driven system
System, digging type desilting platform install spiral silt remover or modified bucket wheel excavator or bucket on the head of a raft unit plate
Wheel reclaimer is machines for mud clearage, adds or is not added with ribbon conveyer (1), and modified bucket wheel excavator or bucket wheel reclaimer cancel walking
Device, directly using raft unit plate top layer as chassis, desilting platform installation liftable and the motor-driven paddle wheel (8) turned to, husky centered rudder
(9) and rotating disc type hinge connection is made on self-propelled plough mud machine (10), tail portion and the head of hithermost shipping platform raft unit plate,
Installation center control room (3) on platform, interior be equipped with of central control room carry out unification to a full set of voluntarily raft formula channel cleanout device
The electronic control system of manipulation.
3. voluntarily raft formula channel cleanout device according to claim 2, it is characterised in that the spiral silt remover installing
On an elevating control frame, passed through by a drill bit (5) with internal thread blade and a bending spiral conveyer (7) inscribed
Fastener for connection forms, and steel pipe is supported by stent, and for steel duct by spoke and hub support, wheel hub is interior to be equipped with spiral conveyer end
Bearing (6), outer wall of steel pipe rear end are fixedly connected with the tube wall or hopper of spiral conveyer, and front end is connect with drill bit in bearing (6),
Drill bit outer wall set gear transmission device and driving device (3), connection, transmission and the driving device of drill bit be all disposed within casing or
In other sealed water-tight spaces, discharge port is docked by discharging diversion trench with the transmission device of Transport Machinery, such spiral
Silt remover can abreast set multiple.
4. voluntarily raft formula channel cleanout device according to claim 1, it is characterised in that the shipping platform is by one
Raft unit plate above equipped with ribbon conveyer (1) or other continuative transports machinery forms, along side between each raft unit plate
Side is connected in binding formula, is directly connected near the head of raft unit plate of desilting platform and the tail portion of desilting platform, each
Raft unit plate is staggered 1/5-1/2 body position backward successively from desilting platform to embankment, whole to be arranged in geese flying in a line-brothers formula, previous raft
The discharge mechanism of unit plate transporter and the loading attachment of the latter raft unit plate transporter are connected to each other, the transmission after discharging
Band replaces clearing apparatus by cascade sprinkling, and the raft unit plate installation closest to embankment tilts the strong belt or spiral of transport capacity
Formula transporter, and its discharge port is made to be located at the top of embankment, the independently installed propeller of each raft unit plate or paddle wheel, rudder and
Self-propelled ploughs mud machine (10) and electronic control system, and all mechanical devices are all by the finger of electronic control system on raft unit plate
Enable work.
5. voluntarily raft formula channel cleanout device according to claim 1, it is characterised in that the generation platform mainly fills
If generating power by water current and buoyancy generating set, magnetic power generator is only used as complementarity and accessory uses, generating power by water current and buoyancy
Power generation can be used independently, can also be combined into river water hybrid power generation device, independent stream generating device is with raft
Unit plate is supporting body, and the propeller type hydrodynamic(al) unit for setting up Waterwheel-type water motor or the assembling of suspension module formula generates electricity,
One liftable raft is set at the position placed in the middle of raft unit plate, the propeller type water of Modular assembled is installed on raft
Motivation group sinks to raft and hydrodynamic(al) unit in the flow of projected depth, suspension type stream generating device is just formed, in raft unit
Plate (13) position placed in the middle is positioned apart from Waterwheel-type water motor (12) and floating engine (15), and the two is made to share a center driving
Main shaft (14) rotating Vortex, and water blocking skirt (16) is set around floating engine, lower edge and the floating engine lower sprocket of water blocking skirt
(17) horizontal diameter flushes, and the floating cylinder circle of floating engine (15) or non-circular double-walled cylinder just form river water mixing
Dynamic power device, generating power by water current and river water hybrid power generation device be used as mobile generating device when, alternative one or
The raft unit plate of multiple shipping platforms is formed with the raft unit plate for generating electricity and transporting dual function, stationary power generation dress
It puts or power station, sets independent buoyancy generating set on bank or on the bank, generating power by water current or river water hybrid power hair are set in korneforos
Electric installation, the selection of fixed buoyancy generating set build cistern close to the embankment of main stem, reserve-water-level and riverbed in pond
Mean annual water (level) is equal, and natural water inlet is repaiied in basin bottom, is connected by conduit pipe with riverbed bottom, artificial water inlet is opened
On pond water storage level top, discharge outlet is connected to channel or low-lying place outside dike directly or by pipeline, and the power station of freezed in winter will
Build greenhouse protection cistern, electric line that stationary power generation device or power station are laid by bank or along water (flow) direction cloth
If, the cable supported by small-sized raft carry out power transmission.
6. voluntarily raft formula channel cleanout device according to claim 5, it is characterised in that described is round or non-circular double
Wall cylinder has inside and outside two cylinder walls that bottom is connected, and inner wall (21) is bonded by oil sealing with gravity piston (20), outer wall (22)
Gas chamber (18) is encircled into the top surface of gravity piston (20), and has stent (19) support, gravity piston (20) and cylinder inner wall
(21) cross section can be round, semicircle, semilune or other are suitable for the geometric form of oil sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310416511.7A CN103469839B (en) | 2013-09-13 | 2013-09-13 | A kind of voluntarily raft formula channel cleanout device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310416511.7A CN103469839B (en) | 2013-09-13 | 2013-09-13 | A kind of voluntarily raft formula channel cleanout device |
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| Publication Number | Publication Date |
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| CN103469839A CN103469839A (en) | 2013-12-25 |
| CN103469839B true CN103469839B (en) | 2018-06-12 |
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| CN201310416511.7A Expired - Fee Related CN103469839B (en) | 2013-09-13 | 2013-09-13 | A kind of voluntarily raft formula channel cleanout device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986560A (en) * | 2015-02-09 | 2016-10-05 | 马瑞志 | Method for constructing building type flood bank and reclaiming and utilizing river bottomland |
| CN105676874B (en) * | 2016-03-16 | 2019-01-25 | 武汉理工大学 | Low energy consumption miniature underwater detection robot and control method based on sonar remote control |
| CN109653281B (en) * | 2018-12-29 | 2021-04-30 | 江苏艺凯环保科技有限公司 | System equipment and process method for ecological dredging of underwater robot |
| CN111910576A (en) * | 2020-08-21 | 2020-11-10 | 王得云 | Can prevent accumulational river course rivers blocking device of hydraulic engineering construction of silt |
| CN116838364B (en) * | 2023-08-30 | 2024-01-23 | 中交第一航务工程局有限公司 | An earth pressure balance type pipe jacking relay type reverse transportation method and transportation device for earthwork in the pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742039Y (en) * | 2004-10-29 | 2005-11-23 | 牛承宝 | Two purpose excavating and dredging machine for water and dry land |
| CN101725162A (en) * | 2008-10-10 | 2010-06-09 | 鄂州市三祥机械有限公司 | Well-type grab bucket sand dredging and desilting ship |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030000114A1 (en) * | 2000-02-24 | 2003-01-02 | Thomas Dennis R. | Material distribution vessel and method for distributing material recovered in a dredging operation |
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2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742039Y (en) * | 2004-10-29 | 2005-11-23 | 牛承宝 | Two purpose excavating and dredging machine for water and dry land |
| CN101725162A (en) * | 2008-10-10 | 2010-06-09 | 鄂州市三祥机械有限公司 | Well-type grab bucket sand dredging and desilting ship |
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